Morpho-cultural and molecular variability of Stemphylium vesicarium causing Stemphylium leaf blight in tropical onions.

ABSTRACT: The cultural, morphological, and molecular variations among 22 isolates of Stemphylium vesicarium (Wallr.) E. Simmons, collected from different locations, was carried out. Significant variations were observed among the Stemphylium isolates regarding colony diameter, mean radial growth rate and sporulation on PDA media. The colonies of S. vesicarium isolates exhibited diverse mycelial growth characteristics, including velvety, cottony, or fluffy textures and a range of colours from whitish to dark grey, olivaceous with a greenish tinge or brownish. The margins of the colonies were observed to be filiform, displaying a filamentous appearance, with entire and undulate shapes and a whitish colouration. The conidiophores of Stemphylium isolates displayed a wide range

SUBMITTER: Chandel R 

PROVIDER: S-EPMC11620030 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature